docs: def make_g2p_id(self):
          """
          Make an association id for phenotypic associations that is defined by:
          source of association +
          (Annot subject) +
          relationship +
          phenotype/disease +
          environment +
          start stage +
          end stage
  
          :return:
  
          """
  
          attributes = [self.environment_id, self.start_stage_id, self.end_stage_id]
          assoc_id = self.make_association_id(
              self.definedby, self.entity_id, self.rel, self.phenotype_id, attributes)
  
          return assoc_id